/*
 * Copyright 2011-2013, David George, Licensed under the Apache License,
 * Version 2.0 (the "License"); you may not use this file except in compliance
 * with the License. You may obtain a copy of the License at
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
 * WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
 * License for the specific language governing permissions and limitations under
 * the License.
 */
package org.magneato.service;

import java.util.HashMap;

import javax.servlet.ServletContext;

import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.magneato.utils.TemplateGroup;
import org.magneato.utils.TemplateGroupNotFoundException;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.stereotype.Service;
import org.springframework.web.context.ServletContextAware;

/**
 * Manages templates by namespace
 */
@Service
public class TemplateManager implements ServletContextAware  {
	@Value("${template.dir}")
	private String templatePath;
	private HashMap<String, TemplateGroup> tgMap = new HashMap<String, TemplateGroup>();

	private final Log _logger = LogFactory.getLog(TemplateManager.class);
	
	public void setServletContext(ServletContext servletContext) {
		templatePath = servletContext.getRealPath(templatePath);
	}

	public TemplateGroup getTemplateGroup(String nameSpace) throws TemplateGroupNotFoundException {
		TemplateGroup templateGroup = tgMap.get(nameSpace);
		if (templateGroup == null) {
			templateGroup = new TemplateGroup(templatePath, nameSpace);
			tgMap.put(nameSpace, templateGroup);
		}
		return templateGroup;
	}
}
